[恢]hdu 2009

2011-12-12 05:04:42

地址：http://acm.hdu.edu.cn/showproblem.php?pid=2009

题意：中文题。

代码：

# include <stdio.h>
# include <math.h>


int main ()
{
    int m ;
    double n, sum ;
    while (~scanf ("%lf%d", &n, &m))
    {
        sum = 0 ;
        while (m--)
        {
            sum += n ;
            n = sqrt(n) ;
        }
        printf ("%.2lf\n", sum) ;
    }
    return 0 ;
}